Nut-lock



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(No Mode-1i) l y y I l Gv. E. S'MOUSE. v r NUT Loox. y No. 529,970. Patente-d Nov.'27, 1.894.'

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GEORGE ELLIS SMOUSE, EVERETT, PENNSYLVANIA;

.N UT- SPECIFICATION forming partei Letters'Pater-it No. 529,970, dated November 2'?, 1894. Application iile'd September 25,1894. Serial No. 524,070. (No model.)

To all whom t may concern.' y t Be it known that I, GEORGE ELLIS-Shonen, of Everetty in the county of Bedford and State ot Pennsylvania, have invented a new and Improved Nut-Lock, ot' which the following is a full, clear, and exact-description. My invention relates to anA improved nut lock of a type employing a key and ratchet to adjustably hold the nut from'unscrewing,

in which similar figures of reference indicate corresponding parts in all the views shown.

Figure 1 is a side view of a bolt, a nut thereon, and the-improvement applied' to retain the nut 'from 'unscrewing. Fig. 2 is a sectional side view of the bolt and nut taken through the longitudinal axis, and `also of the nut lock, on the line 2-2 in Fig. 3. Fig. 3 is an outer end view of a nut, a screw bolt body engaged bythe nut andthe improved nut lock engagingthe bolt and nut; and Fig. t is adetached perspective view of the-locking pawl anda key integral therewith. Y

AThe threaded bolt 10 may be' of any length and diameter required for its service, `the nut 11 that is to engage t-herewith havingsuch corresponding dimensions in its body and lthreaded aperture, as' will adapt it to prop-l erly lit on the threaded portion ot' the bolt when screwed on the same. y y' The bolt 10 is longitudinally grooved to produce a dat bottomedkey way 10a, that is of such a depth as will remove the threads "of the bolt wherein this lon, ;,fitudinal groove or key-way is produced. Along one side ot the key-way 10aa narrow deeper channel 10b is formed throughout the length ot' said keyway, the combined widths of these key-ways being proportioned to the dimensions of the belt and nut'so as to receivea locking deviceI of proper size. i I

The nut yl1 may be square or polygonal-in contour, the usual hexagonally formed nut the improvement. There is a countersunk wall of the nut 11, on the side that will impinge the material to be clamped. by the nut when thebolt-and nutare applied for such purpose.

On the opposite side of the nut, which is outermost in service, a series of ratchet teeth 11b deformed. These teeth that all slope in the same direction, are preferably produced teeth of the ratchet formation are produced -by indentations or excavations of the material between them, which cavitiesiare gradually increased in depth toward the 'threaded ap- -erture of the nut, and terminate at the outer wall 0E the annular integral upright collar 11 which encircles the bolt thread whenthe nut is in place on the latter. 1 y The locking device for the nut and bolt, comprises a spring pawl 12 and an integral key 13. As shown plainly in Fig. 4, the pawl is formed from a thin elastic plate, which is curved-edgewise and also sidewise, so as to vproduce a spring detent that will be adapted for location over the teeth on a portion of the serrated side of the nut, and permit its free downwardly curved end to engage with one ot the teeth, as shown in Figs. Land 3.

The key portion 13 of the locking device,

l2, and is so projected therefrom at one end that it may be entered in the key-way of the bolt, and as represented in Fig. 4 there is an integral tongue or key flange 1??, formed along one edge of the wider thin flat 'key portion 13 at right angles thereto, which flange is so projected from the wider'part of the key, that it will have a looseengagernent with the narrow key-way 10b in the bolt body when the locking device is applied to the bolt and nut. Such a relative width and thickness is given to the key body`13 that it will loosely occupy the wide shallow key way l0 when the nut lock is in service, the hanged projection 13 then having a loose 'engagement with the channel 10", as before explained. The part ness of the nut' between its annularly chan- 'depression 11 produced around the threaded .v

tangential to the circular wall of the threaded Y perforation inthe nut. As shown in Fig. 2, the y .is constructed integral with the spring pawl being shown to illustrate the .application ot' IOO 13 is proportioned in length to suit the thickneled side and opposite serrated side, and as shown there is a lateral lip 13b turned on the end of said key body which is farthest from the detent pawl,`in a direction which will a1- low it to lie in the channel 11 of the nut when the locking device is placed forl service, vuch 'au engagement being represented in i ig. 2.'

It will be seen, that if the keybody 13 isI placed in the unt so as to engage its lip with the channel 115 and have a loose contact with the thread of the nut, the integral spring of the locking device 12, 13, from sheet metal, being permitted by its peculiar construction..

By gradually depressing the indentations between ratchet teeth 1.1b as they approach4 the annular collar 11, the inward slope thus given to these cavities lar mentiondjand assure an engagement of the pawl andl teeth, thecollar serving toprevent an engagement of thepawl tee with the thread of the bolt,-which if permitted would.

4 result in the elevation' of said toe -fromthe ratchetteeth as the nut'i screw it on the bolt.

The toe of the lspring pawl 12, is shaped on its terminal edgesso that it will have a' bearbeing rotated to jing on any one of the tangentially inclined .teeth 11b, throughout the length of the latter,"

which will co-actfwith the gradual dee ning of the teeth to cause the toe of the pawl to press toward the collar 11 if` thefnut is fric- I tionallymoved on a bolt. This featureot construction assures the proper'actron at all times of the thin 'spring pawland a mainfadapts them 4to crowd the toe of the spring pawl 12 toward the col-4 tenance of locked engagement of its toe with the teeth on the nut. 'k

Having thus described my invention, I claim as new and desire to secure by Letters Patentl. In a nut lock of the key and ratchet type, the combination, with a boltgrooved in its thread, and a nut having locking projections on top, of a spring Vpawl, having an integral depending key, and a key flange formed at right angles on said key along one edge, su hstantially as described.

2. 1n a nut lockot the kev and ratchet type, the combination with a threaded bolt longitudinally grooved producing a fiat bottomed shallow key-way and a narrow deeper keyway at one side in the shallow key-way, and a threaded nut having ratchet teeth on one end, of a ,locking pawl having a laterally hanged depending key, which key and its flangeare adapted. to engage with the key-ways in the bolt, and hold thetoe of the pawl engaged with the ratchet teeth, substantially as described.

V3. In a nut lock of the key and ratchet type, the combination with a threaded bolt longitudinally grooved, producing a key-way, and a nut having a series of ratchet teeth formed in-'one emi deepening toward their inner terminals, and an integral collar into which said .teeth merge at their inner' ends. of'a spring pawl bent to engage its toe with the ratchet teeth,` and having a depending key loosely secured in the nut and engaging the key-way to hold the pawl toe in contact with the ratchet teeth, substantially` as described.

4. In a nut lock of the key and ratchet type, the nut having a continuous series of tangential ratchet teeth formed in one end, said -teeth being sloped in intervening cavities to gradually .deepen them toward their inner terminals lwhich merge in 'an annular collar' encircling the threaded aperture of the n'ut, substantially as described. f

,emenda ELLIS. sMoUsE.

Witnesses: A

J. F. REED, J con Ruun. 

